package com.foreknow.demo12;

public class A {
//  @Override
//  public String toString() {
//    return "这是我想要的内容";
//  }

    public static void main(String[] args) {
        A a = new A();
        System.out.println(a); //输出内存地址com.foreknow.demo12.A@60e53b93
    }
}